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<p class="MsoNormal"><span lang="EN-US">Dear all<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’m modelling a solar system for water heating applications. I’ve used a type 1b(solar collector), a type 5b (HX) and a type 114 (pump) and connected them as a closed loop. When I run a simulation, it gives: TRNSYS Message
441 (<u>The inputs to the listed units have not converged at this time step. The values at the last iteration will be used and the simulation will proceed</u>).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">When I decrease the pump flowrate (for example around 50 kg/hr), it works. However, it has another issue: the outlet temperature from heat exchanger equals to the heat exchanger inlet temperature!!!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I would appreciate if someone guide me in that case<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Ali<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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